Adjustable 2-piece set fits odd shaped items from 48in. to 90in. in length. 1 inner and 1 outer carton (sold separately) are required to make a set. Manufactured from 200#/ECT-32 kraft corrugated. Cartons have a full over lap bottom for added strength. Sold and shipped flat in bundle quantities. These environmentally-preferable boxes contain a minimum of 60% total recycled material and 40% postconsumer recycled material.